/*
 *    Copyright © OpenAtom Foundation.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.inspur.edp.bef.engine.core.dtm;

import com.inspur.edp.bef.api.action.IBefCallContext;
import com.inspur.edp.bef.api.action.determination.IDeterminationContext;
import com.inspur.edp.bef.bizentity.GspBizEntityObject;
import com.inspur.edp.bef.bizentity.operation.BizCommonDetermination;
import com.inspur.edp.bef.bizentity.operation.beomponent.DeterminationParameter;
import com.inspur.edp.bef.bizentity.operation.componentenum.BizParameterType;
import com.inspur.edp.bef.bizentity.operation.componentinterface.IBizParameter;
import com.inspur.edp.bef.core.determination.builtinimpls.predicate.ExecutePredicate;
import com.inspur.edp.bef.engine.common.GspBizEntityUtil;
import com.inspur.edp.cef.api.determination.ICefDeterminationContext;
import com.inspur.edp.cef.designtime.api.operation.CommonDetermination;
import com.inspur.edp.cef.entity.changeset.*;
import com.inspur.edp.cef.spi.determination.AbstractDeterminationAction;
import com.inspur.edp.cef.spi.determination.IDetermination;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.Arrays;

public class CommonEngineDtmAdaptor implements IDetermination {

  private final ExecutePredicate canExecutePredicate;
  private CommonDetermination determination;
  private GspBizEntityObject gspBizEntityObject;
  private int paramCount = 0;

  public CommonEngineDtmAdaptor(GspBizEntityObject gspBizEntityObject,
      CommonDetermination determination) {
    this.gspBizEntityObject = gspBizEntityObject;
    this.determination = determination;
    this.canExecutePredicate = DtmUtil.buildCanExecute(gspBizEntityObject, determination);
  }

  @Override
  public String getName() {
    return determination.getName();
  }

  @Override
  public boolean canExecute(IChangeDetail change) {
    return canExecutePredicate.test(change);
  }

  @Override
  public void execute(ICefDeterminationContext context, IChangeDetail change) {
    BizCommonDetermination bizCommonDetermination = (BizCommonDetermination) determination;
    if (runOnceCheck((IDeterminationContext) context, bizCommonDetermination)) {
      return;
    }
    paramCount = 0;
    bizCommonDetermination = (BizCommonDetermination) this.determination;
    paramCount = bizCommonDetermination.getParameterCollection() == null ? 0 : bizCommonDetermination.getParameterCollection().getCount();

    Object[] args = new Object[paramCount + 2];
    args[0] = context;
    args[1] = change;
    if(paramCount > 0) {
      for(int i = 0; i<paramCount;i++){
        args[2+i] = getParamValue(bizCommonDetermination.getParameterCollection().getItem(i));
      }
    }
    AbstractDeterminationAction determinationAction = GspBizEntityUtil.
        getComponentClass(this.determination.getComponentId(), Arrays.asList(args));
    determinationAction.Do();
  }

  private Object getParamValue(IBizParameter parameter){
    if(parameter.getActualValue() == null || StringUtils.isEmpty(parameter.getActualValue().getValue()))
      return null;
    String value = parameter.getActualValue().getValue();
    if(parameter.getParameterType() == BizParameterType.String){
      return value;
    }
    else if(parameter.getParameterType() == BizParameterType.Int32){
      return Integer.valueOf(value);
    }else if(parameter.getParameterType() == BizParameterType.Boolean){
      return Boolean.valueOf(value);
    }else if(parameter.getParameterType() == BizParameterType.Decimal){
      return new BigDecimal(value);
    }
    return value;
  }

  private boolean runOnceCheck(IDeterminationContext context,
      BizCommonDetermination bizCommonDetermination) {
    if (bizCommonDetermination.getRunOnce()) {
      IBefCallContext callContext = context.getBEContext().getCallContext();
      String mark = determination.getID().concat(context.getBEContext().getID());
      if(callContext.containsKey(mark))
        return true;
      callContext.setData(mark, null);
    }
    return false;
  }

  @Override
  public String toString() {
    return (gspBizEntityObject != null ? gspBizEntityObject.getCode() : "nonNode")
        + ":"
        + (determination != null ? determination.getCode() : "nonOp");
  }
}
